Device Engineering Incorporated 385 E. Alamo Drive Chandler, AZ 85225 Phone: (480) 303-0822 Fax: (480) 303-0824 E-mail: admin@deiaz.com BD429/DEI0429 FAMILY ARI 429/RS-422 Line Driver Integrated Circuit Features: ARI 429 Line Driver for HI speed (100 khz) and LOW speed (12.5 khz) data rates Pin for Pin replacement part for industry standard ARI 429 Line Drivers Available in a 16 Pin SOIC (WB), 16 Pin CERDIP, 16 Lead Ceramic SOP, 28L CLCC and 28L PLCC Low EMI RS-422 line driver mode for data rates up to 100 khz Adjustable slew rates via two external capacitors Inputs are TTL and CMOS compatible Low quiescent power of 125mW (typical) Programmable output differential range via VREF pin Outputs are fused for failsafe overvoltage protection Drives full ARI load of 400W and 30,000pF Extended (-55 C/+85 C) and Military (-55 C/+125 C) temperature ranges 100% Final Testing Figure 1: BD429 Block Diagram 2016 Device Engineering Incorporated 1 of 13 DS-MW-00429-01 Rev. G
General Description: The BD429 ARI Line Driver Circuit is a bipolar monolithic IC designed to meet the requirements of several general aviation serial data bus standards. These include the differential bipolar RZ types such as ARI 429, ARI 571, and ARI 575, as well as the differential NRZ types such as the RS-422 standard. Functional Description: Modes: The BD429 operates in either a 429 mode or a 422 mode as controlled by the 429/422 pin. 429 Mode: In 429 mode, the serial data is presented on the DATA(A) and DATA(B) inputs in the dual rail format defined in the MARK 33 Digital Information Transfer System ARI Specification 429-10. The driver is enabled by the SY and CLOCK inputs. The output voltage level is programmed by the VREF input and is normally tied to +5VDC along with V1 to produce output levels of +5 volts, 0 volts, and 5 volts on each output for ±10 volts differential outputs. * See Figure 4. 422 Mode: In 422 mode, the serial data is presented on DATA(A) input. The driver is enabled by the SY and CLOCK inputs. The outputs swings between 0 volts and +5 volts if VREF is at +5VDC. *See Figure 5. Output Resistance: The driver output resistance is 75W ±20% at room temperature; 37.5W on each output. The outputs are also fused for failsafe protection against shorts to aircraft power. The output slew rate is controlled by external timing capacitors on CA and CB. Typical values are 75pF for 100 KHz data and 500pF for 12.5 KHz data. Table 1: Truth Table 2016 Device Engineering Incorporated 2 of 13 DS-MW-00429-01 Rev. G
V REF SY DATA(A) C A A OUT -V GND 1 2 3 4 5 6 7 8 16 V 1 15 429/422' 14 13 12 CLOCK DATA(B) C B 11 B OUT 10 9 +V DATA(A) C A 5 6 7 8 9 10 11 SY 12 V REF V 1 429/422' 4 3 2 13 14 1 28 27 26 15 16 17 18 A OUT -V GND +V B OUT 25 24 23 22 21 20 19 CLOCK DATA(B) C B Figure 3: DIP, SOIC & CSOP Pinout Figure 2: PLCC & CLCC Pinout Pin Name VREF SY DATA(A) DATA(B) CA CB AOUT BOUT Table 2: Pin Descriptions Description Analog Input. The voltage on VREF sets the output voltage levels on AOUT and BOUT. The output logic levels swing between +VREF, 0 volts, and VREF volts. No Connect Logic input. Logic 0 forces outputs to NULL state. Logic 1 enables data transmission. Logic inputs. These signals contain the Serial Data to be transmitted on the ARI 429 data bus. Refer to Figure 4and Figure 5. Analog Nodes. External timing capacitors are tied from these points to ground to establish the output signal slew rate. Typical CA = CB = 75pF for 100 khz data and CA = CB = 500pF for 12.5 khz data. * Outputs. These are the line driver outputs which are connected to the aircraft serial data bus. -V Negative Supply Input. 15VDC nominal. GND Ground. +V Positive Supply Input. +15VDC nominal. CLOCK 429/422' V1 Logic input. Logic 0 forces outputs to NULL state. Logic 1 enables data transmission. Logic Input. Mode control for ARI 429 and RS-422 modes. An internal 10KW pull up resistor keeps the chip in ARI 429 mode when there is no external connection. This creates a default logic 1, enabling the ARI 429 mode. A forced logic 0 enables the RS-422 mode. Logic Supply Input. +5VDC nominal. *CA and CB pin voltages swing between ±5 volts. Any electronic switching of the capacitor on the pins must not inhibit the full voltage swings. 2016 Device Engineering Incorporated 3 of 13 DS-MW-00429-01 Rev. G
Table 3: Absolute Maximum Ratings PARAMETER SYMBOL RATING UNITS Voltage between pins +V and V 40 V V1 Maximum Voltage V1 7 V VREF Maximum Voltage VREF 6 V DATA(A) Max Input Voltage DATA(B) Max Input Voltage VDATA(A) VDATA(B) (GND-0.3V) to (V1 + 0.3V) Lead Soldering Temperature TSLD 280 o C (10 sec duration, thru-hole packges) Storage Temperature TSTG -65 to +150 o C Max Junction Temperature Ceramic Package & Plastic Package short term operation TJ MAX1 +175 o C Max Junction Temperature Plastic Package Limit (prolonged operation) TJ MAX2 +145 o C Output Short Circuit Duration See Note 1 Output Over-Voltage Protection See Note 2 Power Dissipation See Table 5 below Notes. 1. One output at a time can be shorted to ground indefinitely. 2. Both outputs are fused at between 0.5 Amp DC and 1.0 Amp DC to prevent an over-voltage fault from coupling onto the system power bus. V Table 4: Operating Range PARAMETER SYMBOL MIN TYP MAX UNITS Positive Supply Voltage +V +11.4 16.5 VDC Negative Supply Voltage -V -11.4-16.5 VDC V1 V1 +4.75 +5 +5.25 VDC VREF (For ARI 429) VREF +4.75 +5 +5.25 VDC VREF (For other applications) VREF +3 +6 VDC Operating Temperature (Plastic Package) TA -55 +85 C Operating Temperature (Ceramic Package) TA -55 +125 C Thermal Management Device power dissipation varies greatly as a function of data rate, load capacitance, data duty cycle, and supply voltage. Proper thermal management is important in designs operating at the HI speed data rate (100KBS) with high capacitive loads and high data duty cycles. Power dissipation may be estimated from Table 5 Power Dissipation Table. Device power dissipation (Pd) is indicated for 100% data duty cycle with no word gap null times and should be adjusted for the appropriate data duty cycle (DC). Pd(application) = DC * [Pd(table) - 145mW] + 145mW, where DC is the application data duty cycle, Pd(table) is the Pd from the table for the indicated data rate and bus load, and 145mW is the quiescent power. The application s data duty cycle (DC) for 100KBS operation is calculated as: DC = (total bits transmitted in 10 sec period / 1,000,000) = (32 x total ARI words transmitted in 10 sec period / 1,000,000). Heat transfer from the IC package should be maximized. Use maximum trace width on all power and signal connections at the IC. Place vias on the signal/power traces close to the IC to maximize heat flow to the internal power planes. If possible, design a solid heat spreader land under and beyond the IC to maximize heat flow from the device. 2016 Device Engineering Incorporated 4 of 13 DS-MW-00429-01 Rev. G
Table 5: Power Dissipation table 100% Duty Cycle, Full Load = 400W/30,000pF Half Load = 4,000W/10,000pF DATA RATE LOAD +V @ 15V -V @ -15V V1 + VREF @5V BD429 POWER LOAD POWER 0 to NONE 2.0mA -5.0mA 4mA 125mW 0.0mW 100kbps 12.5kbps FULL 16.0mA 19.0mA 4mA 485mW 60.0mW 100kbps FULL 48.0mA 51.0mA 4mA 1194mW 325.0mW 12.5kbps HALF 6.0mA 8.0mW 4mA 196mW 30.0mW 100kbps HALF 22.0mA 25.0mA 4mA 561mW 162.5mW Table 6: DC Electrical Characteristics Conditions: Temperature: -55 C to +125 C Ceramic, -55 C to +85 C Plastic, +V = +11.4VDC to +16.5VDC, V = -11.4VDC to 16.5VDC; V1 = VREF = +5VDC ±5%, 429/422' = Open Circuit (unless otherwise noted.) SYMBOL PARAMETER MIN TYP MAX UNIT TEST CONDITIONS IQ+V IQ-V IQV1 IQVREF Quiescent +V supply current Quiescent -V supply current Quiescent V1 supply current Quiescent VREF supply current - 2 - ma - 5 - ma - 4 - ma - 10 - ma No Load. 429 mode. DATA = CLOCK = SY = LOW No Load. 429 mode. DATA = CLOCK = SY = LOW No Load. 429 mode. DATA = CLOCK = SY = LOW No Load. 429 mode. DATA = CLOCK = SY = LOW VIH Logic 1 Input V 2.0 - - V No Load. VIL Logic 0 Input V - - 0.6 V No Load. IIH Logic 1 Input I - - 10 ma No Load. IIL Logic 0 Input I - - -20 ma No Load. (429/422 Pin IIL = -2mA max) IOHSC IOLSC VOH VNULL VOL ICT + - ISC (+V) ISC (-V) ROUT Output Short Circuit Current (Output High) Output Short Circuit Current (Output Low) Output Voltage HIGH. ( +1) Output Voltage NULL. ( 0 ) Output Voltage LOW. ( -1 ) Timing Capacitor Charge Current CA (+1 ) CB(-1 ) CA(-1 ) CB (+1 ) +V Short Circuit Supply Current -V Short Circuit Supply Current Resistance on each output -80 - - ma Short to Ground 80 - - ma Short to Ground VREF - 250mV VREF VREF + 250mV V No Load. 429 Mode. -250 - +250 mv No Load. 429 Mode. -VREF 250mV - -VREF +200 200 -VREF + 250mV - V ma ma No Load. 429 Mode. No Load. 429 Mode. SY = CLOCK = HIGH CA and CB held at zero volts. - - +150 ma Output short to ground - - -150 ma Output short to ground - 37.5 - W Room Temp Only CIN Input Capacitor - - 15 pf - 2016 Device Engineering Incorporated 5 of 13 DS-MW-00429-01 Rev. G
AC ELECTRICAL CHARACTERISTICS Figure 4 and Figure 5 show the output waveforms for the ARI 429 and RS-422 modes of operation. The output slew rates are controlled by timing capacitors CA and CB. They are charged by ±200mA nominal. Slew Rate (SR) measured as V/msec, is calculated by: SR = 200/C where C is in pf. DATA(A) DATA(B) +V REF A OUT 0V -V REF +V REF B OUT 0V -V REF Figure 4: ARI 429 Waveforms DATA(A) +V REF A OUT 0V +V REF B OUT 0V Figure 5: RS-422 Waveforms 2016 Device Engineering Incorporated 6 of 13 DS-MW-00429-01 Rev. G
Table 7: AC Electrical Characteristics Parameter Symbol MIN MAX UNITS NOTES Output Rise Time AOUT or BOUT CA = CB = 75pF CA = CB = 500pF tr tr 1.0 5.0 2.0 15.0 msec msec Output Fall Time AOUT or BOUT CA = CB = 75pF CA = CB = 500pF tf tf 1.0 5.0 2.0 15.0 msec msec Input to Output Propagation Delay tpnh tpnl - 3.0 msec See Figure 6 below AOUT / BOUT Skew Spec. - - 500 nsec DATA(A) 50% DATA(B) 50% t PNL 50% A OUT 0V t PNH 50% B OUT 0V Figure 6: Propagation Delay 2016 Device Engineering Incorporated 7 of 13 DS-MW-00429-01 Rev. G
Figure 7: Burn In Schematic Figure 8: Typical Circuitry Switching Capacitors for High-Speed/Low-Speed Operation 2016 Device Engineering Incorporated 8 of 13 DS-MW-00429-01 Rev. G
DEI PART NUMBER (2) Table 8: Ordering Information MARKING (1) PACKAGE TEMP RANGE PROCESSING BD429 BD429 16 CERDIP -55 / +125 C CERAMIC BURN IN BD429-G BD429 E3 (1) 16 CERDIP G -55 / +125 C CERAMIC BURN IN BD429A-G BD429A E4 (1) 16 SOIC WB G -55 / +85 C PLASTIC STANDARD BD429A1-G BD429A1 E4 (1) 16 SOIC WB G -55 / +85 C PLASTIC BURN IN BD429B BD429B 28 PLCC -55 / +85 C PLASTIC STANDARD BD429B BD429B-G E3 (1) 28 PLCC G -55 / +85 C PLASTIC STANDARD DEI0429-WMS DEI0429-WMS 16 CSOP -55 / +125 C CERAMIC STANDARD DEI0429-WMB DEI0429-WMB 16 CSOP -55 / +125 C CERAMIC BURN IN DEI0429-EES DEI0429-EES 28 LCC -55 / +85 C CERAMIC STANDARD DEI0429-EMS DEI0429-EMS 28 LCC -55 / +125 C CERAMIC STANDARD DEI0429-EMB DEI0429-EMB 28 LCC -55 / +125 C CERAMIC BURN IN Notes: 1. All packages marked with Lot Code and Date Code. E3 or E4 after Date Code Denotes Pb Free category. 2. Suffix legend: -XYZ: X = package code, Y = temperature range code, Z = process flow code. Table 9: Screening Process PLASTIC PLASTIC STANDARD BURN IN CERAMIC STANDARD CERAMIC BURN IN THERMAL CYCLE MIL-STD-883B M1010.4 Cond. B NO NO 10 Cycles 10 Cycles GROSS & FINE LEAK NO NO YES YES BURN IN MIL-STD-883B M1015 Cond. A NO 160 hrs @ +125 C NO 96 hrs @ +125 C ELECTRICAL TEST: ROOM TEMPERATURE 100% 100% 100% 100% HIGH TEMPERATURE 100% @ +125 C 100% @ +125 C 100% @ +125 C 100% @ +125 C LOW TEMPERATURE 0.65% AQL@-55 C 0.65% AQL@-55 C 0.65% AQL@-55 C 0.65% AQL@-55 C 2016 Device Engineering Incorporated 9 of 13 DS-MW-00429-01 Rev. G
PACKAGE TYPE PACKAGE REF THERMAL RESIST. θjc / θja (ºC/W) Table 10: Package Characteristics JEDEC MOISTURE SENSITIVITY LEVEL & PEAK BODY TEMP LEAD FINISH MATERIAL / JEDEC Pb-Free CODE 16L CERAMIC DIP 16 CERDIP 35 / 75 HERMETIC SnPb solder 16L CERAMIC DIP, GREEN 16L SOIC WIDE BODY, GREEN 16 CERDIP G 16 SOIC WB G 35 / 75 HERMETIC 25 / 75 (4L PCB) MSL 1 260ºC 16L CERAMIC SOP 16 CSOP 23 / TBD HERMETIC 28L PLCC 28L PLCC, GREEN 28L CERAMIC LEADLESS CHIP CARRIER 28 PLCC 28 PLCC G 25 /55 (4L PCB) 25 /55 (4L PCB) MSL 3 235ºC MSL 3 245ºC 28 LCC 14 / 60 HERMETIC Sn Solder Sn96.5/Ag 3/Cu 0.5 e3 NiPdAu e4 Au e4 SnPb Matte Sn e3 Au e4 Pb Free DESIGNATON Not Pb-free Pb Free solder terminals RoHS Compliant Pb Free solder terminals Not Pb-free RoHS Compliant Pb Free solder terminals JEDEC MO MS-030- AC MS-030- AC MS-013- AA na MS-018- AB MS-018- AB na Figure 9: Typical Transceiver/Line Driver Interconnect Configuration 2016 Device Engineering Incorporated 10 of 13 DS-MW-00429-01 Rev. G
0.785 MAX (19.94) 0.025 RAD (0.64) Dimensions Are in Inches(mm) 0.291 MAX (7.39) 0.050 MAX (1.27) 0.290-0.320 (7.37-8.13) 0.020-0.070 (0.51-1.78) 0.060 ±0.005 (1.52 ±0.13) 0.125 MIN (3.18) 0-10 deg. 0.008-0.012 (0.20-0.30) 0.160 MAX (4.06) 0.100 ± 0.010 (2.54 ± 0.25) 0.018 ±0.002 (0.46 ±0.05) 0.385 ±0.025 (9.78 ±0.64) 16L CERDIP Package Dimensions 16L SOIC WB Package Dimensions 2016 Device Engineering Incorporated 11 of 13 DS-MW-00429-01 Rev. G
28L PLCC Package Dimensions 16L CSOP Package Dimensions 16L CSOP Package Dimensions 2016 Device Engineering Incorporated 12 of 13 DS-MW-00429-01 Rev. G
28 1 28 CLCC Package Dimensions DEI reserves the right to make changes to any products or specifications herein. DEI makes no warranty, representation, or guarantee regarding suitability of its products for any particular purpose. 2016 Device Engineering Incorporated 13 of 13 DS-MW-00429-01 Rev. G